{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "e03fb32b",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " 驱动器 C 中的卷没有标签。\n",
      " 卷的序列号是 8C21-4543\n",
      "\n",
      " C:\\Users\\stowar\\Desktop\\STudy\\机器学习 的目录\n",
      "\n",
      "2025/10/31  13:45    <DIR>          .\n",
      "2025/10/30  12:44    <DIR>          ..\n",
      "2025/10/31  13:45    <DIR>          .ipynb_checkpoints\n",
      "2025/10/31  13:44                72 1.hello_jupyter.ipynb\n",
      "               1 个文件             72 字节\n",
      "               3 个目录 202,411,581,440 可用字节\n"
     ]
    }
   ],
   "source": [
    "ls"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "21d3ef34",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "哈哈哈\n"
     ]
    }
   ],
   "source": [
    "print(\"哈哈哈\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "5dc047f7",
   "metadata": {},
   "outputs": [
    {
     "ename": "NameError",
     "evalue": "name 'cell' is not defined",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mNameError\u001b[0m                                 Traceback (most recent call last)",
      "\u001b[1;32m~\\AppData\\Local\\Temp\\ipykernel_18424\\922218814.py\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0mcell\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[1;31mNameError\u001b[0m: name 'cell' is not defined"
     ]
    }
   ],
   "source": [
    "cell"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "472e42da",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "3"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "a = 1\n",
    "b = 2\n",
    "a+b"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "0511db69",
   "metadata": {},
   "source": [
    "m进入Markdown"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "02158395",
   "metadata": {},
   "source": [
    "# markdown演示\n",
    "## 二级标题\n",
    "### 三级标题\n",
    "#### 四级标题"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "54cf6389",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "3c3e4cc1",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3 (ipykernel)",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.7.8"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 5
}
